Fahrenheit Sensor LM34 (CB14400E)

This circuit measures temperatures from +5 to + 300º F using a sensor from National Semiconductor not very easy to obtain.

Wow Wow Effect for Guitar (CB9092E)
This circuit is placed between the instrument pickup and the amplifier input. The same version can...
Touch Switch (CB449)
This circuit triggers on a lamp when the sensor (a metal plate us touched). Up to 100 W...
Multimeter with the CA3140 (CB12314E)
We obtained this circuit from a 1993 documentation. The circuit has current and voltage ranges that...